4curves.dk is a .dk domain served by 2 nameservers (ns1.designrus.dk, ns2.designrus.dk). It was registered on 9 October 2023 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 135.181.173.67 is hosted by Hetzner Online GmbH (AS24940) in Finland. Mail is handled by server1.designrus.dk. The zone is not DNSSEC-signed, publishes a DMARC policy and has no IPv6 address. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 135.181.173.67 | 3600s | dev2.designrus.dk | AS24940 | Hetzner Online GmbH | 135.181.0.0/16 | 🇫🇮 Finland | Helsinki |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | server1.designrus.dk | 176.9.4.22 2a01:4f8:141:3416::2 |
server1.designrus.dk server1.designrus.dk |
AS24940 Hetzner Online GmbH AS24940 Hetzner Online GmbH |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 4curves.dk → 135.181.173.67 |
| 🔶 Autoconfig | discover.designrus.dk → 49.12.124.182 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 1 | 1 | 443 | discover.designrus.dk |
| TXT Record |
|---|
| v=spf1 mx a include:_spf.designrus.dk ~all |
| Policy | Record (4curves.dk) |
|---|---|
| ~all (soft fail) | v=spf1 mx a include:_spf.designrus.dk ~all |
| Policy | Record (_dmarc.4curves.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; rua=mailto:postmaster@4curves.dk |
| www | 135.181.173.67 (AS24940) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| Denial of existence | NSEC3 · 0 iterations · no salt · opt-out RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 3/10 · policy: ~all
No problems found| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.4curves.dk | 4curves.dk |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✓ Found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2026100502 |
| Primary NS (MNAME) | ns1.designrus.dk |
| Responsible (RNAME) | admin@designrus.dk |
| Refresh | 1200s |
| Retry | 540s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2023-10-09 |
| Expires | 2027-10-08 (356d) |
Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-16 15:25:43 | 892ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-14 14:09:05 | 729ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-13 10:30:56 | 796ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-11 01:19:58 | 1730ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-06 00:39:13 shown | 1544ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-29 23:43:18 | 844ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-27 23:16:04 | 805ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-24 22:01:45 | 883ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-22 13:01:31 | 889ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-15 21:44:17 | 2775ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-07 03:48:41 | 1161ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-30 05:39:32 | 739ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-25 04:58:47 | 1932ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-20 21:20:01 | 9127ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-15 13:18:27 | 2077ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-10 20:28:34 | 1311ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-07 02:17:48 | 1214ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-02 10:21:03 | 1477ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-25 21:09:31 | 1012ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-20 07:36:17 | 1151ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-16 08:21:07 | 1147ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-11 03:26:49 | 9645ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-07 03:48:46 | 1082ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-30 22:32:47 | 804ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-28 04:11:22 | 867ms | 2 NS 1 A 1 MX | 🔓 Insecure |